Dust-cap for valves or the like.



W. B. BURKE.

DUST CAP FOR VALVES OF. THE LIKE.

APPLICATION FILED MAR-26,1915.

Patented Jan. 15, 1918.

fWITIigZZES tenants.

{ nrrnn ens rnrrir wrnnun n. BURKE, or CLEVELAND, onto, assienor. TO A scnzannnn's son, incon- PORATED, 0F BROOKLYN, NEW YORK, A. COBPORATIOIQ' OF NEW YURK.

To all whomz't may concern:

Beit known that l, WILBun B. BURKE, a citlzen of the United States, residing at Cleveland, in the county of Cu'yahoga and State ofOhio, have invented new and useful Improvements in Dust-Caps for Valves or the like, of which the following is a specification. 1

This invention relates to dust caps for valves or the like and aims to provide certain improvements therein. I

The features of the invention will be hereinafter more fully described and pointed out in the claims.

Referring to the drawings which illustrate several forms of the invention, the.

Figure l is a longitudinal section of oneform of the invention. Fig. 2 is a longitudinal section of another form of the invention.

Fig. 3 is'a side elevation of Fig. 1. Fig. 4

. is a bottom view of Fig. 1, and Fig. 5 is a top view thereof.

Referring to Fig. 1 of the drawings let A. indicate the cap .portion or shell which is preferably drawn of suitable metal and preferably has an'enlarged footportion l3, Between the cap portion and the foot portion is formed a shoulder C. Resting upon the shoulder C. is a nut portion, D., which is constructed in the form of a bush- 'ing.- This is provided with a threaded bore,

' E., designed to screw overthe valve shell.

In the construction of Fig. 1 the bushing,

1).,- is retained in place by compressing the metal, F., of the cap portion into contact with the bushing. This may bedone by squeezing the metal against the bushing or with a flange, H extending at right angles with the flange H, and parallel with the longitudinal axis of .the cap.

T he. cross section of the cap portion, A., may be of any suitable shape, as for instance .round or hexagonal. and the foot portion,

13., is also preferably hexagonal, or other non-circular contour. In this case'the bushwill not rust.

puss-car ron vntvns on THE LIKE.

I Specification of Letters Patent. Patented an, 15, lttfiit o' inseam an Iliarch26, 1915. Serial No. 17,178.

ings-will preferably correspond to the shape of the foot portion, so that when they are introduced into the foot portion they will forms non-circular connection therewith. Tl'llS connection is an eihcient and durable one and prevents any possibility of loose.

ness between the parts when they are due to torsional strains in screwing and unscrewing the cap. The compression of the foot portion about the bushing securely holds the bushing in place so that the parts cannot separate in a direction which is longitudinal of the cap. I A feature of importance in connection with the invention is the formation of a cap portion of steel or other cheap metal in combination with a bushing of brass or other non-corrosive metal; As dustv caps are exposedto moisture the threaded portion of thecap must be formed of a metalwhich For this reason it has been the custom heretofore to -form the entire cap of brass, which has resulted in an expensive cap. By the present invention the principal advantages of a brass cap are secured'without the attendant-expense. The cost of'the cap of Fig. l'may be further reduced by theconstruction of Fig. 2, wherein the bushing,

11., may be made of brass and the plates or blanks-I. and J., of iron or of a cheap metal.

materially reduced as compared with the bushing-'D.,.of Figz 1', while an effective and durable construction is-at the same time obtained.

In'either figure a space is preferably left at the bottom of the cap as shown, wherein may be introduced a leather or other washer adapted to-bear against the .wheel' rim or rim nut, if the latter is used.

While I have shownjand described several forms of the invention, it will be understood that I do not wish to be limited thereto since The weight of the bushing, H., is hence very v whereby \\llL-li the cap is rotated the bushing is forcud ioiotate with in i 2. A dust cap fo ti1' a-valves 01" the. like,

, comprising a cap puitioii'liaviiian enlarged I plygoiial font pOi'llOil and having a means 1 0 for con'necting it-t o a llireaded valve casing r he like, said means uon'iprising a -sap arately formed polygonal bushing entering andxlyinw within and substantially ii'iclosed f by said-l 0i it portion, and said. foot port-ion being permanently ('OllllllJtCd to tlie bushing I by overlying partsbf the foot'po'i'tio n,- the article COl'lSl1 l }1ll- 1l1g' a unitary structure-- v side of said liiisliiiig 3; A cap for. valves 1 the-like comprising. a cap poi-(:i ii having"air-enlarged ftiot porlion and linsliin liaviii" a fla'ii 'e'bxtendiii 7 q I n o o longitudinally {Ojl iliu. cap and a image ex- 'blank iii the recess fiiriiied'liv said 'flan cs. I a

4; A (a for i-alvvs'urlliv like coin ii-isin r:

a. i-ap-po i'tio i l 'ia'ving," an enlarged foul porloin-andbushing having a flange} oxlcnding luiigiiiidin'ally .of tlie irapand a flange vxv 30 lzoi'idiing traiisi crsolv {1101-001 and, av plate. 01' blank iii-[lie recess fui'inedlliy said flaiigur and a si'cond pla'io .pi: flange on the, opp mia .WILBUR is; BURKE. 

